18671099424 has 24 divisors (see below), whose sum is σ = 49011636240. Its totient is φ = 6223699776.

The previous prime is 18671099423. The next prime is 18671099431. The reversal of 18671099424 is 42499017681.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (18671099423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97245214 + ... + 97245405.

It is an arithmetic number, because the mean of its divisors is an integer number (2042151510).

Almost surely, 2^18671099424 is an apocalyptic number.

It is an amenable number.

18671099424 is an abundant number, since it is smaller than the sum of its proper divisors (30340536816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18671099424 is a wasteful number, since it uses less digits than its factorization.

18671099424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194490632 (or 194490624 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 18671099424 in words is "eighteen billion, six hundred seventy-one million, ninety-nine thousand, four hundred twenty-four".